Do you require maximum pressure stability in your gas supply?

Transcription

1 TECHNOLOGY FOR GASES Do you require maximum pressure stability in your gas supply? Rely on 40 years of experience in dome-loaded pressure regulation. Dynamic WITT regulators ensure a stable, adaptable operating pressure for your processes.

2 STABLE OPERATING PRESSURE WITH WITT DOME-LOADED PRESSURE REGULATORS THE PROBLEM Pressure fluctuations in the gas supply are a risk factor in every industrial manufacturing process. Deviations in the gas pressure due to withdrawal fluctuations pose a threat to the quality of downstream processes and can make products unusable. THE SOLUTION Dome-loaded pressure regulators ensure maximum stability of the gas pressure even in case of withdrawal or inlet pressure fluctuations, thus ensuring maximum process safety. WHY WITT? With a special design, complex stream simulations and filed detailed solutions, WITT has optimised the functioning of dome-loaded pressure regulators. An excellent advantage of WITT dome-loaded pressure regulators over the conventional pressure controllers is their extremely stable outlet pressure even in case of great withdrawal or inlet pressure fluctuations. The regulations characteristics are extremely stable even in case of extremely high or low flow rates in the limiting performance range. The WITT dome-loaded pressure regulators realise precise regulation even at large pressure differences. A two-stage pressure regulation is no longer necessary in most of the cases. WITT offers a wide range of high-performance and low-maintenance dome-loaded pressure regulators that are suitable for large flow rates of several thousand m 3 /h as well. Even low pressure differences of less than 1 bar between the inlet pressure and outlet pressure can be accurately regulated. The own medium control makes additional gas for the pilot pressure regulator redundant. The pilot pressure regulator (or an electrically controlled proportional valve) enables maximum flexibility and the outlet pressure can be easily adjusted. This makes it possible to respond to temperature fluctuations or changes in the downstream process immediately. The compact regulators, made of either stainless steel or brass, enable large withdrawal ranges, are suitable for numerous technical, corrosive and aggressive gases and can be mounted irrespective of the orientation. Domeloaded pressure regulators from WITT are available individually or as a completely assembled set including pilot pressure regulator, pressure gauges, fittings and a non-return valve. Dome-loaded pressure regulators by WITT: probably the best dome-loaded pressure regulators in the world. OUR RANGE High flow rates (up to Kv value 30) Inlet pressures of up to 300 bar Outlet pressures between 500 mbar and 45 bar Useable for almost all gases including for corrosive and aggressive mediums In brass, stainless steel and aluminium Different connections Wall bracket (optional) Filter for long durability (optional) All models available as a ready-to-install completely mounted and tested set (incl. pilot pressure regulator, pressure gauges and connections) APPLICATIONS (EXAMPLE) Chemical industry Petrochemistry Oil & gas / energy generation Pharmaceutics Automobile/shipbuilding Mechanical and system engineering Food industry Mining Semiconductors & photovoltaics

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4 PROBABLY THE BEST DOME-LOADED PRESSURE REGULATORS IN THE WORLD FUNCTION Dome-loaded pressure regulators are operated with gas pressure. Unlike spring-loaded pressure controllers, the opening force of the valve required for pressure reduction is generated by the pressure of a so-called pilot gas and not by a spring. The pilot gas is supplied to the pressure chamber. In the pressure chamber, the pilot gas acts on a diaphragm whose stroke movement is transferred to the valve seat via a diaphragm plate. The gas to be regulated is supplied to the dome where it reaches the valve seat. The pressure of the pilot gas and the relevant stroke movement of the diaphragm lead to the valve opening or closing, depending on the operating pressure set, and the required quantity of the gas being supplied further. The excess pilot gas is supplied to the back pressure side or blown off. The pressure of the pilot gas is regulated via a separate pilot gas regulator or a proportional valve. 1 3 Inlet pressure Pilot pressure Outlet pressure Body either in brass or in high-quality stainless steel Valve seat Diaphragm A large diaphragm with a wide bearing surface on the diaphragm plate enables accurate regulation Diaphragm plate Pilot Control Tube does not check the existing outlet pressure on the valve seat but at the output of the pressure regulator where it is relevant for receiving the correct outlet pressure Balanced Seat Design Bore hole through the valve seat that leads the outlet pressure under the valve seat and thus balances it out Closing spring

5 DIAPHRAGM Unlike many other designs, the diaphragm of WITT products is not located directly on the valve seat. Instead, it transfers the stroke movement via a special diaphragm plate. This allows extremely fast adaptation to withdrawal changes. There are no fluctuations in the outlet pressure until the pressure controller finds the correct valve opening. The special diaphragm also enables an extremely wide regulation range. The pressure is accurately regulated even in case of small pressure differences of less than 1 bar in the inlet pressure and the outlet pressure. Large pressure differences can also be realised. BALANCED SEAT DESIGN A bore hole through the valve seat and a special sealing of the stroke movement balance out the valve from both sides on an even surface by back pressure. The inlet pressure does not act on the valve piston and the outlet pressure is almost independent of the inlet pressure fluctuations. 150% 15% 100% PILOT CONTROL TUBE Unlike other regulators, most of the WITT dome-loaded pressure regulators do not check the existing outlet pressure on the valve seat but at the output of the pressure regulator where it is relevant for the correct outlet pressure control. This allows highest precision in pressure regulation. PILOT PRESSURE REGULATOR A major advantage of most of the WITT domeloaded pressure regulators is their easy and flexible use. The pilot pressure regulator can be used to adjust the operating pressure as soon as a different gas pressure is required at the outlet point or the gas or ambient temperature changes significantly. CLOSED CONTROL SYSTEM WITT dome-loaded pressure regulators are flexible regarding the gas supply. Either the regulated gas (internal medium) or a separate gas (external medium) can be used as pilot gas. In case of internal medium control, the dome-loaded pressure regulator works autonomously and the pilot gas is then supplied to the outlet pressure side once again. Gas is thus not used for pressure control and there are no additional costs. BENEFITS Precice pressure regulation Stable operating pressure even in case of inlet pressure and withdrawal fluctuations Accurate control of small pressure differences of less than 1 bar Large pressure differences (300 to 10 bar) can be regulated, two-stage control redundant Dynamic system with pilot gas regulator for fast and flexible adaptation of the outlet pressure The closed control system makes additional gas supply redundant and saves costs Useable for almost all gases including for corrosive and aggressive mediums Different connections, compact design and wall bracket (optional) for easy assembly Low maintenance All models available ready-to-install as a completely assembled and tested set 75% 50% 5% 0% 0% Flow rate [%] 0% 40% 60% 80% 100% 10% Outlet pressure [%] WITT pressure regulators other suppliers Always up to date. Subscribe now.

6 GAS TYPES & MATERIAL WITT dome-loaded pressure regulators are made of high-quality materials and are ideal for a wide range of gases and applications. Depending on the requirement, the devices can be made from a wide range of body materials and material combinations for diaphragms and seals. For technical gases for instance, the standard body material is brass. The diaphragm is made of a specially coated fabric lining. For aggressive and corrosive gases, housings are made of stainless steel (AISI 316L). This material offers high resistance against acid and corrosion. The diaphragm is made of FPM which is as well very durable and resist-ant. These materials cover the most aggressive applications and ensure the quality of your processes. Gas type Technical gases Aggressive gases (e.g. chlorine), corrosive gases (e.g. biogas) Body material Brass stainless steel (316L stainless steel) Diaphragm / seal material Elastomer (CR/NBR) Elastomer (FPM) STANDARDS AND REGULATIONS Latest production technologies and a complex quality management system ensure maximum WITT quality that you can trust. WITT dome-loaded pressure regulators are manufactured taking into account the rules of technology and the relevant safety regulations for designing, material selection and resistance. All organisational, commercial and technical activities affecting the quality have been appropriately planned, controlled and monitored in our QM manual. WITT and WITT products also fulfil all relevant international standards and norms, e.g. DIN EN ISO 9001, DIN EN ISO 14001, DIN EN ISO 000, ATEX 94/9/EC and PED 97/3/EC. In the course of ATEX, WITT dome-loaded pressure regulators were subjected to an ignition hazard analysis as per EN 117-1, DIN EN and ZH1/00. The controllers can thus be used in the explosion group IIC, device category. Moreover, a special test for resistance to internal ignition in case of effect of oxygen pressure surges is conducted by BAM. With the implementation of ISO 000, all WITT pressure regulators were subjected to a HACCP analysis and thus fulfil the requirements pertaining to food safety. The specified certificates and test reports can be provided on request. MAINTENANCE & ACCESSORIES WITT dome-loaded pressure regulators require almost no maintenance. A maintenance interval of 5 years is usually sufficient for ensuring complete functionality. In case of use of contaminated gases, regular replacement of all wear parts every 3 years is recommended. WITT offers an economical maintenance kit with all the necessary replacement parts for easy maintenance. WITT dome-loaded pressure regulators are used in various areas of application. There is a wide range of connection adapters for every screw connection for almost any application. All models also have an option of installing or pre-installing a filter. Wall brackets are also optionally available for easy assembly.

7 DOME-LOADED PRESSURE REGULATOR SETS READY TO USE! Make use of our know-how in the field of gas safety technology and buy a ready to use package of the WITT dome-loaded pressure regulator. All models are available as domeloaded pressure regulator sets, including pilot pressure regulator, inlet and outlet pressure gauges and connections. All components of the complete solution are perfectly concerted to each other. The set is assembled; tested and can be directly used in the process. WITT offers an individual production as per desire and requirement. BENEFITS Ready to use Easy to install No emission of the pilot gas in the environment closed system Dynamic system, operating pressure can easily be be changed Available completely in stainless steel or brass 3 EXAMPLE OF A PRESSURE CONTROL REGULATOR: CLOSED SYSTEM 1 Pilot pressure regulator Pressure gauge 3 Screw connection 45 Dome-loaded pressure regulator 1 Inlet pressure Pilot pressure Outlet pressure 4 Always up to date. Subscribe now.

8 PRODUCT PORTFOLIO 767LE HIGH PERFORMANCE DOME-LOADED PRESSURE REGULATOR Kv value: 30 / cv value: 34,8 G 3" female 737LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR Kv value:.4 / cv value:.8 G 3/4" female 757LE HIGH PERFORMANCE DOME-LOADED PRESSURE REGULATOR Kv value: 15 / cv value: 17.4 G " female 77LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR Kv value: 0.7 / cv value: 0.8 G 3/8" female 747LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR Kv value: 3.6 / cv value: 4. G 1" female 737LE HD HIGH PRESSURE DOME-LOADED PRESSURE REGULATOR Kv value: 1.65 / cv value: 1.9 G 3/4" female

9 767LE HIGH PERFORMANCE DOME-LOADED PRESSURE REGULATOR body cover pilot pressure diaphragm plate diaphragm Pilot Control Tube (PCT) FEATURES Kv value: 30 / cv value: 34,8 High flow rates Pilot Control Tube Balanced Seat Design Suitable for O PRESSURE RANGE Max. inlet pressure: 40 bar / 580 psi (O 30 bar / 435 psi, CO 5 bar / 363 psi) Outlet pressure: 0,5 30 bar / psi Max. pilot pressure: 30 bar / 435 psi CONNECTIONS G 3" female, Flange DN 80/100 (Set) (Other connections on request) Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE: brass, elastomer WEIGHT approx. 45 kg / 99. lb OPTIONS Filter Ready to use Set GASE several gases, e.g. N, CO, O, H Outlet pressure p [bar] FLOW CHART 767LE NITROGEN (N ), 0 C flow pv: 6 bar pv: 4 bar 1 pv: bar pv: 4 bar pv: 1 bar Flow rate [m 3 /h], pv = Inlet pressure valve (Balanced Seat Design) pv: 8 bar pv: 6 bar body pv: 1 bar pv: 10 bar CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh Always up to date. Subscribe now.

10 757LE HIGH PERFORMANCE DOME-LOADED PRESSURE REGULATOR body cover pilot pressure diaphragm plate diaphragm Pilot Control Tube (PCT) FEATURES Kv value: 15 / cv value: 17.4 High flow rates Pilot Control Tube Balanced Seat Design Suitable for O PRESSURE RANGE Max. inlet: 40 bar / 580 psi (O 30 bar / 435 psi, CO 5 bar / 363 psi) Outlet: bar / psi Max. pilot: 30 bar / 435 psi CONNECTIONS G " female, Flange DN 50 (Set) (Other connections on request) Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE: brass, elastomer Model LE-ES: 316L / stainless steel, elastomer WEIGHT approx. 14 kg / 30.9 lb (Brass) OPTIONAL Filter Ready to use set GASES LE (brass): technical gases, e.g. N, CO, O, H LE-ES (stainless steel): allmost all gases, e.g. N, CO, O, H, Cl, NH 3, H S Outlet pressure p [bar] flow Valve (Balanced Seat Design) FLOW CHART 757LE NITROGEN (N ), 0 C pv: 6 bar pv: 4 bar 1 pv: 1 bar pv: bar pv: 8 bar Flow rate [m 3 /h], pv = Inlet pressure body pv: 10 bar pv: 8 bar pv: 10 bar pv: 6 bar CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh

11 747LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR (For high flow rates) pilot pressure body cover diaphragm plate diaphragm pilot control tube (PCT) FEATURES Kv value: 3.6 / cv value: 4. High flow rates Pilot Control Tube Balanced Seat Design Suitable for O PRESSURE RANGE Max. inlet: 40 bar / 580 psi (O 30 bar / 435 psi, CO 5 bar / 363 psi) Outlet: bar / psi Max. pilot: 30 bar / 435 psi CONNECTIONS G 1" female Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE: brass, elastomer Model LE-ES: 316L / stainless steel, elastomer WEIGHT approx. 10 kg / lb (Brass) OPTIONAL Filter Ready to use set GASES LE (brass): technical gases, e.g. N, CO, O, H LE-ES (stainless steel): allmost all gases, e.g. N, CO, O, H, Cl, NH 3, H S Outlet pressure p [bar] flow FLOW CHART 747LE NITROGEN (N ), 0 C pv: bar Valve (Balanced Seat Design) pv: 4 bar Flow rate [m 3 /h], pv = Inlet pressure pv: 6 bar pv: 8 bar body pv: 10 bar pv: 1 bar pv: 1 bar pv: 16 bar CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh Always up to date. Subscribe now.

12 737LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR (For medium flow rates) pilot pressure body cover diaphragm plate diaphragm FEATURES Kv value:.4 / cv value:.8 Balanced Seat Design Medium flow rates Burn-out safety with oxygen Suitable for O PRESSURE RANGE Max. inlet: 60 bar / 870 psi (O 60 bar / 870 psi, CO 5 bar / 363 psi) Outlet: bar / psi Max. pilot: 10 bar / 145 psi CONNECTIONS G 3/4" female Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE: brass, elastomer Model LE-ES: 316L / stainless steel, elastomer WEIGHT approx. 8 kg / 18 lb (Brass) OPTIONAL Filter Ready to use set GASES LE (brass): technical gases, e.g. N, CO, O, H LE-ES (stainless steel): allmost all gases, e.g. N, CO, O, H, Cl, NH 3, H S Outlet pressure p [bar] flow Filter Valve body (Balanced Seat Design) FLOW CHART 737LE NITROGEN (N ), 0 C 1 10 pv: 15 bar 8 pv: 1 bar pv: 10 bar pv: 15 bar 6 pv: 8 bar pv: 15 bar 4 pv: 6 bar pv: 15 bar pv: 4 bar pv: 8 bar Flow rate [m 3 /h], pv = Inlet pressure CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh

13 77LE UNIVERSAL DOME-LOADED PRESSURE REGULATOR (For low to medium flow rates) pilot pressure body cover diaphragm plate diaphragm flow FEATURES Kv value: 0.7 / cv value: 0.8 Balanced Seat Design Low to medium flow rates Suitable for O PRESSURE RANGE Max. inlet: 46 bar / 870 psi (O 30 bar / 435 psi, CO 5 bar / 363 psi) Outlet: 9 bar / psi Max. pilot: 10 bar / 145 psi CONNECTIONS G 3/8" female Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE: brass, elastomer WEIGHT approx. 5 kg / 11 lb OPTIONAL Filter Ready to use set GASES LE (brass): technical gases, e.g. N, CO, O, H Outlet pressure p [bar] Valve (Balanced Seat Design) FLOW CHART 77LE NITROGEN (N ), 0 C pv: 8 bar pv: 6 bar pv: 1 bar pv: 3 bar pv: 5 bar Flow rate [m 3 /h], pv = Inlet pressure pv: 15 bar pv: 1 bar body pv: 15 bar pv: 5 bar pv: 5 bar CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh Always up to date. Subscribe now.

14 737LE HD HIGH PRESSURE DOME-LOADED PRESSURE REGULATOR body cover pilot pressure diaphragm plate diaphragm FEATURES Kv value: 1.65 / cv value: 1.9 Balanced Seat Design Medium to high flow rates High pressure design (300 bar / 4,350 psi) Burn-out safety with oxygen Suitable for O PRESSURE RANGE Max. inlet: 300 bar / 4,350 psi (O 00 bar /,900 psi, CO 60 bar / 870 psi) Outlet: -45 bar / psi Max. pilot: 50 bar / 75 psi CONNECTIONS G 3/4" female Pilot pressure regulator: G 1/8" female Gauge: G 1/8" female MATERIALS Model LE HD: brass, elastomer WEIGHT approx. 10 kg / lb OPTIONAL Filter Ready to use set GASES LE HD (brass): technical gases, e.g. N, CO, O, H Outlet pressure p [bar] flow Valve (Balanced Seat Design) FLOW CHART 737LE HD NITROGEN (N ), 0 C pv: 50 bar body pv: 70 bar pv: 70 bar pv: 100 bar 10 pv: 30 bar pv: 50 bar 5 pv: 10 bar pv: 30 bar Flow rate [m 3 /h], pv = Inlet pressure CONVERSION FACTORS Ar 0,84 Cl 0,6 CO 0,8 H 3,73 He,65 Natural gas 1,3 O 0,94 1 bar = 14.5 psi 1 m 3 /h = 35.3 scfh

15 OUR PROMISE Premium quality pressure regulation technology Very high value for money Individual pressure regulators and customised solutions Decades of WITT know how Always up to date. Subscribe now.

16 TECHNOLOGY FOR GASES OUR PRODUCT RANGE Gas Control Equipment Gas mixing systems Gas metering systems Gas analysers Leak detection systems Gas pressure vessels Engineering of customised systems Gas Safety Equipment Flashback arrestors Non-return valves / check valves Quick couplers Safety relief valves Stainless steel devices Gas filters Pressure regulators Outlet points Lance holders Ball valves Automatic hose reels Test equipment Accessories Customised safety equipment V _ 09 / 014 WITT-Gasetechnik GmbH & Co KG Salinger Feld Witten POB Witten Germany Tel. +49 (0) Fax +49 (0) witt@wittgas.com WITT Gas Techniques Ltd. 1, Europa Boulevard Westbrook Warrington, WA5 7TN Great Britain Tel. +44 (0) Fax +44 (0) witt-uk@wittgas.com WITT FRANCE S.A.R.L. 131 Voie de Compiègne Morsang sur Orge France Tel. +33 (0) Fax +33 (0) witt-france@wittgas.com WITT Tecnología de Gas, S.L. C/Simón Cabarga N a Bajo Santander España Tel Fax witt-espana@wittgas.com WITT Gas Controls LP 380 Winkler Dr., Suite 00 Alpharetta, GA USA Tel Fax witt-usa@wittgas.com WITT POLSKA Sp. z o. o. ul. Legnicka 55/UA Wrocław Polska Tel. +48 (0) Fax +48 (0) witt-polska@wittgas.com WITT ITALIA Srl. Via Giovanni XXIII, Solza (BG) Italia Tel Fax witt-italia@wittgas.com GUSTUS & PARTNER GmbH Installation Service Wartung Alt Salbke 6 10, Geb Magdeburg Germany Tel. +49 (0) Fax +49 (0) gustus@wittgas.com Please contact us for partners in your country Always up to date. Subscribe now.